D. Gargasaitė, “Socializmo propaguotojo Karolio Rutkaus leidybinė veikla JAV 1905–1910 m”., BS, vol. 28, no. 21, pp. 82–84, Dec. 1995, Accessed: Apr. 27, 2025. [Online]. Available: https://www.zurnalai.vu.lt/knygotyra/article/view/30114